GB805801A - Improvements in electric motors with displaceable armature - Google Patents
Improvements in electric motors with displaceable armatureInfo
- Publication number
- GB805801A GB805801A GB27946/56A GB2794656A GB805801A GB 805801 A GB805801 A GB 805801A GB 27946/56 A GB27946/56 A GB 27946/56A GB 2794656 A GB2794656 A GB 2794656A GB 805801 A GB805801 A GB 805801A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- bush
- brake
- balls
- running
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
- H02K7/1021—Magnetically influenced friction brakes
- H02K7/1023—Magnetically influenced friction brakes using electromagnets
- H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
- F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/12—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
- H02K7/125—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking magnetically influenced
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
- F16D2121/22—Electric or magnetic using electromagnets for releasing a normally applied brake
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
805,801. Electromagnetic brakes. DEMAGZUG G.m.b.H. Sept. 12, 1956 [Sept. 15, 1955], No. 27946/56. Class 103 (1). In a device for preventing engagement of the brake in electric motors with displaceable armatures, one radially displaceable locking member is adapted to interact with the motor shaft when the motor is running to prevent engagement of the brake when the motor is stopped. In the embodiment illustrated, the top part of the drawing represents the device in the inoperative position and the lower position is shown in the operative position. The device is in the form of a structural unit connected to the outside of the motor casing in such a manner that balls 2, which constitute the locking members, are adapted to engage a groove 1a in the motor shaft-end 1 as the motor is running. If the engagement of the brake after the motor has stopped is to be avoided, a magnet coil 7 is energized so that a bush 4 is moved by the armature 5 to the position shown in the lower part of the drawing to lock the balls 2 between an annular groove 4a formed on the inner surface of the bush 4 and the groove 1a in the motor shaft-end 1 in the brake released running position. When the motor is restarted after a disengagement of the brake, the force of the brake spring is neutralized by the magnetic force of the stator field of the motor, and pressure exerted by the balls on the bush 4 is released, so that the bush is enabled under the action of the spring 6 to return to its initial inoperative position. In this manner, after the switching-off operation, the rotor can be freely rotated by hand. The device can also be rendered effective when the motor is stationary by switching on the motor and magnet simultaneously; in which case the shaft 1, the armature 5 and thus the bush 4 are brought into the locking position illustrated in the lower half of the drawing. The motor is automatically switched-off when the bush 4 reaches its operative position, by reason of the switch 8 interrupting the circuit to the motor.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE805801X | 1955-09-15 | ||
| DE345062X | 1955-09-15 | ||
| DED21299A DE965830C (en) | 1955-09-15 | 1955-09-16 | Device for preventing the application of the brake of sliding armature motors |
| DED23705A DE1028673B (en) | 1955-09-15 | 1956-08-30 | Device for automatic release of the brake of sliding armature motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB805801A true GB805801A (en) | 1958-12-10 |
Family
ID=27433254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27946/56A Expired GB805801A (en) | 1955-09-15 | 1956-09-12 | Improvements in electric motors with displaceable armature |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE551015A (en) |
| CH (1) | CH345062A (en) |
| GB (1) | GB805801A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005090816A1 (en) * | 2004-03-17 | 2005-09-29 | Robert Bosch Gmbh | Spring-actuated parking brake device |
-
0
- BE BE551015D patent/BE551015A/xx unknown
-
1956
- 1956-08-11 CH CH345062D patent/CH345062A/en unknown
- 1956-09-12 GB GB27946/56A patent/GB805801A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005090816A1 (en) * | 2004-03-17 | 2005-09-29 | Robert Bosch Gmbh | Spring-actuated parking brake device |
| JP2007502740A (en) * | 2004-03-17 | 2007-02-15 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Spring-operated parking brake device |
Also Published As
| Publication number | Publication date |
|---|---|
| BE551015A (en) | |
| CH345062A (en) | 1960-03-15 |
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